.. _call_value:

Invocation -- call-by-value
===========================

Arguments are passed to a function by value only. The name of the
variable in the calling function has no meaning in the called
function. Pointers (discussed in :ref:`topic5`) provide a way
to enhance what is passed to a function. In topic 5, we will come
back to the topic of functions to discuss how to pass and return
pointers to/from functions.